"Yee, Lee Peng" <br/><br/>
New Syllabus Mathematics Workbook 1 (5th Edition) 

 - UK  Shing Lee  Publishers PTE LTD,OUP  2007 
 - 148 
<br/><br/><label>ISBN: </label>9780195799316 
<br/><br/><label>Dewey Class. No.: </label>510  / T-520